- Product Name: Digital Earth Tester
  - Brand: UNI-T
  - Model: UT521
  - Earth Resistance Range: 0 - 20Ω
  - Earth Resistance Range: 0 - 200Ω
  - Earth Resistance Range: 0 - 2000Ω
  - AC Earth Voltage Range: 0 - 200V
  - Frequency: 50Hz / 60Hz
  - Display Count: 2000 Counts
  - Display Type: Backlit LCD
  - Testing Method: 2-Wire and 3-Wire Testing
  - Data Storage: 20 Records
  - Auto Power Off: Approx. 10 Minutes
  - Power Supply: 6 x 1.5V AA Batteries
  - Dimensions: 160 × 100 × 70.5mm
  - Weight: Approx. 560g
  - Application: Ground Resistance and Earth Voltage Measurement

  Accessories Included:
  - 1 x UNI-T UT521 Digital Earth Tester
  - 3 x Test Leads (Green, Yellow and Red)
  - 2 x Alligator Clip Test Leads
  - 2 x Auxiliary Earth Stakes
  - 1 x Carrying Bag
  - 1 x User Manual
  

  - Accurate earth resistance measurement
  - Measures earth voltage up to 200V
  - Supports precise 3-wire testing
  - Supports simple 2-wire testing
  - Large backlit LCD display
  - Data hold function
  - Stores up to 20 measurement records
  - Low battery indication
  - Auto power-off function
  - Double insulation protection
  - Over-range indication
  - Lightweight portable design
  - Ideal for field and industrial applications
  - Suitable for electrical and lightning protection systems